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Tailoring fatty food simulants made from solvent mixtures (1): comparison of methanol, ethanol and isopropanol behaviour with polystyrene

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To investigate the use of solvent mixtures as test media replacing olive oil in migration tests, the interaction of polystyrene with mixtures composed of various amounts of tert.butyl acetate (mimicking the ester functions of oil) and of a low molecular weight alcohol (methanol, ethanol and isopropanol as inert co-solvent) was studied, using FTIR. Isopropanol, which has a lesser tendency to form hydrogen bonds in the plastic, can be used as main component of alternative fatty test media, its aggressiveness to polystyrene being tailored by adjusting the concentration of tert.butyl acetate. Concentrations below 20% seem useful on the basis of the mechanism of displacement of the alcohols.
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Keywords: FATTY FOOD SIMULANTS; FTIR; MIGRATION; PACKAGING; POLYSTYRENE; SOLVENTS MIXTURES

Document Type: Research Article

Affiliations: 1: INRA-SquAlE, 78350 Jouy en Josas, France 2: ENSIA, 1 avenue des olympiades, Massy, France 3: INRA-SquAlE, Moulin de la housse, BP 1039, 51687 Reims, France

Publication date: February 1, 2001

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